Display Name is cleared from database on login

### What happened?

On every login the Display Name is cleared for any account that signs in.

### Expected behavior

Display Name stays the way it was set by the account owner.

### Steps to reproduce

1. Sign in
2. Set Display Name in the settings in User Portal
3. Sign out
4. Sign in again

### Keygate version

0.1.3

### Deployment method

Docker

### Relevant logs

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